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Related Experiment Video

Updated: May 21, 2026

Generation of Marked and Markerless Mutants in Model Cyanobacterial Species

Generation of Marked and Markerless Mutants in Model Cyanobacterial Species

Published on: May 29, 2016

Adventures with cyanobacteria: a personal perspective.

Govindjee¹, Dmitriy Shevela

¹Department of Plant Biology, University of Illinois at Urbana-Champaign Urbana, IL, USA.

Frontiers in Plant Science

|May 31, 2012

Summary

Cyanobacteria, ancient oxygenic photosynthesizers, have been studied for light absorption, energy transfer, and fluorescence. Research explores their unique two-pigment system and bicarbonate

Keywords:

Anacystis nidulans (Synechococcus elongatus – strain PCC 7942)Emerson enhancement effect P750 Synechocystis sp. PCC 6803 chlorophyll a fluorescence photosystem I photosystem II red drop

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Generation of Marked and Markerless Mutants in Model Cyanobacterial Species

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Area of Science:

Photosynthesis research
Cyanobacteria biology
Biophysics

Background:

Cyanobacteria are the oldest known oxygenic photosynthesizers.
Decades of research have explored their complex photosynthetic mechanisms.

Purpose of the Study:

To review historical and ongoing research on cyanobacteria since the 1960s.
To elucidate key aspects of their light-harvesting and electron transport systems.
To discuss their evolutionary significance in the context of photosynthesis.

Main Methods:

Spectroscopic analysis of light absorption and fluorescence kinetics.
Studies on excitation energy transfer at various temperatures.
Investigation of electron transport and the role of bicarbonate in Photosystem II (PSII).

Main Results:

Detailed characterization of light absorption, energy transfer, and fluorescence in cyanobacteria.
Elucidation of the unique two-light reaction and the critical role of bicarbonate in PSII.
Insights into the regulation of pigment changes and fluorescence dynamics under varying light conditions.

Conclusions:

Cyanobacteria possess sophisticated and unique photosynthetic mechanisms.
Their study provides fundamental insights into the evolution of oxygenic photosynthesis.
Ongoing research continues to reveal the complexity of their light-dependent processes.